How severe is CVE-2021-30605?

CVE-2021-30605 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30605 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30605?

CVE-2021-30605 affects Google Chrome Os Readiness Tool. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30605?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-30605 published?

CVE-2021-30605 was published on 2021-09-08 and last updated on 2026-06-17.

CVE-2021-30605

CVE-2021-30605 is a high-severity vulnerability in Google Chrome Os Readiness Tool with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Google Chrome Os Readiness Tool
Published: 2021-09-08
Last modified: 2026-06-17

Description

Inappropriate implementation in the ChromeOS Readiness Tool installer on Windows prior to 1.0.2.0 loosens DCOM access rights on two objects allowing an attacker to potentially bypass discretionary access controls.

Frequently asked questions

What is CVE-2021-30605?: Inappropriate implementation in the ChromeOS Readiness Tool installer on Windows prior to 1.0.2.0 loosens DCOM access rights on two objects allowing an attacker to potentially bypass discretionary access controls.
How severe is CVE-2021-30605?: CVE-2021-30605 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30605 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30605?: CVE-2021-30605 affects Google Chrome Os Readiness Tool. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30605?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-30605 published?: CVE-2021-30605 was published on 2021-09-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:google:chrome_os_readiness_tool:*:*:*:*:*:*:*:*

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